Oil pipe is mainly used for drilling oil and gas wells and transporting oil and gas. It includes oil drill pipe, oil casing and pumping pipe. Oil drill pipe is mainly used to connect drill collar and drill bit and transmit drilling power. Oil casing is mainly used to support the well wall during drilling and after completion to ensure the normal operation of the drilling process and the entire oil well after completion. Pumping pipe mainly transports oil and gas at the bottom of the oil well to the ground.

According to the strength of the steel itself, casing can be divided into different steel grades, namely J55, K55, N80, L80, C90, T95, P110, Q125, V150, etc. Different well conditions and well depths require different steel grades. In corrosive environments, the casing itself is also required to have corrosion resistance. In places with complex geological conditions, the casing is also required to have anti-collapse performance.

Oil casing is a large-diameter pipe that serves to fix the wall or borehole of oil and gas wells. The casing is inserted into the wellbore and fixed with cement to help the wellbore separate the rock formation and prevent the wellbore from collapsing, while ensuring the circulation of drilling mud for drilling and mining. The processing forms of the casing end: short round thread, long round thread, trapezoidal thread, special buckle, etc.

(1) The main importing countries of oil casing are: Germany, Japan, Romania, Czech Republic, Italy, Britain, Austria, Switzerland, the United States, Argentina and Singapore also import. The import standards are mostly based on the American Petroleum Institute standards API5A, 5AX, 5AC. The steel grades are H-40, J-55, N-80, P-110, C-75, C-95, etc. The main specifications are 139.77.72R-2, 177.89.19R-2, 244.58.94R-2, 244.510.03R-2, 244.511.05R-2, etc.

(2) API specifies three lengths: R-1 is 4.88 to 7.62 m, R-2 is 7.62 to 10.36 m, and R-3 is 10.36 m or longer.

(3) Some imported goods are marked with LTC, which means long thread casing.

09CrCuSb (enterprise code ND steel) is a steel resistant to sulfuric acid low temperature dew point corrosion (ND steel plate, ND steel pipe, 09CrCuSb steel plate, 09CrCuSb steel pipe, etc.). Usually called 09 chromium copper antimony.

09CrCuSb (ND steel) is a hot-rolled steel plate and steel pipe with excellent resistance to sulfuric acid dew point corrosion developed for the purpose of heat exchange, smoke pipes, chimneys, boiler air preheaters, economizers, heat exchangers, condenser coolers, evaporators, etc. for coal-fired boilers, oil-fired boilers, electric furnaces. Its superior resistance to sulfuric acid dew point corrosion and very high cost performance make it the best material that can completely replace stainless steel and surpass stainless steel (in terms of resistance to sulfuric acid dew point corrosion). ND steel has great economic significance and conforms to today’s “green” concepts such as high efficiency, longevity, energy saving, and environmental protection, as well as the national development policy orientation.

ND steel, namely 09CrCuSb steel, is the most ideal steel material for “resistance to low-temperature dew point corrosion of sulfuric acid” at home and abroad. ND steel is widely used in the manufacture of economizers, air preheaters, heat exchangers and evaporators that serve in high-sulfur flue gas to resist dew point corrosion of sulfur-containing flue gas. ND steel also has the ability to resist chloride ion corrosion. The main reference index of ND steel pipe (immersion in 50% H2SO4 solution at 70 degrees Celsius for 24 hours) is higher than that of carbon steel, similar steel imported from Japan, and stainless steel in terms of corrosion resistance. The product has been widely praised by major domestic refineries and manufacturing units after use. The carbon content in the steel is low and has achieved good results.

09CrCuSb(即ND钢)

机械性能  MECHANICAL PROPERITIES

化学成份  CHEMICAL PROPERITIES

GB 150.2-2011中的化学成分

09CrCuSb钢(ND钢)同其它钢种的比较 COMPARIRATION

Standard for steel pipe
Standard for steel pipe API 5L for use in conveying gas, water, and oil…

North Steel is proud to offer a wide variety of convenient, valuable pipe-related services to our clients.
Many of these services are value-added based on the nature of your order.

Shot Blasting for Steel Pipe Coatings

Normally shot blasting is required prior to galvanizing, painting, or applying any type of coating to the pipe. Shot blasting will remove the thin rust preventive coat from the pipe that was applied at the time of manufacture. We blast pipe from 1/8” thru 24” (Inquire for larger diameters)

Precision Pipe Cutting

We offer precision cutting on lengths of pipe ranging from 2 inches to 60 feet, and diameters from 2” thru 48”. The type of cutting used depends on both the size of the pipe and the required precision. The tolerance ranges from 1/8” thru 48”.

Cut and Roll Grooving for Standard and Line Pipe

North steel provides both cut grooving and roll grooving. Cut and roll grooving can be done in any style according to industry standards. Cut grooving can be applied to any length of pipe ranging from ½” to 20” in diameter with a minimum length of 2 ½”. Roll grooving can be applied to any length of pipe ranging from 2” to 24” in diameter with a minimum length of 6″.

Pipe Beveling

Beveling is the process in which we form an angle between the edge of a pipe and a plane perpendicular to the surface to a certain degree, most commonly used to prepare the ends of pipes for welding. Beveling can also be used for deburring the cut tends for safety and aesthetic reasons. We can apply any type of bevel to any degree required. Beveling can be applied to the face of any size or diameter of a pipe.

Pipe Threading

Threaded pipes can provide an effective seal for pipes transporting liquids, gases, steam, and hydraulic fluid. We thread any length of pipe in diameters ranging from 1/8” to 20”. Tapers available are NPT*, NPS*, 3/16” Peerless, and 8 round taper. (See fabrication services page for larger diameters).

ANSI/ASME standard B1.20.1 covers threads of 60-degree form with flat crests and roots in sizes from 1/16 inch to 24 inch Nominal Pipe Size. The taper rate for all NPT threads is 1/16 (3/4 inch per foot) measured by the change of diameter (of the pipe thread) over distance. The taper divided by a center line yields an angle 1° 47′ 24″ or 1.7899° as measured from the center axis.

Steel Pipe Coatings

Noth steel can provide a variety of protective coating and lining services. Some of the most common coating & lining services are FBE (Fusion Bond Epoxy), Synergy Wrap, Scotch Coating (Fletcher Coating), Spiral Wrap and Galvanizing. Common lining types are FBE (Fusion Bond Epoxy) & Cement lining. These coatings are widely used to protect the steel pipe used in pipeline construction, reinforcement steel, and on a wide variety of piping connections. This protective layer of coating helps prevent corrosion, which can lead to leaks, service interruptions, and even explosions of the steel wall. The pipe size range for these services are normally 1/8” OD and up. Traditionally, this service is order specific. Please contact your local Kelly Pipe branch for further assistance.

Custom Pipe Fabrication

North steel can provide a wide range of fabrication services. Please contact us for all cutting, beveling, grooving, threading, and shot blasting over the diameter limits mentioned on the other pages.

North Steel also fabricates the following type of items: Custom Steel Fabricated Products for Water Works, Pump Station and Pipeline Contractors, Water Well Drillers, Oil and Gas Operators, Utility Companies, Architects, and Landscape Designers – Welding – Cutting – Cement Coating & Lining.